Use release products from the same company. I always use Partall #2 wax and Partall PVA. Usually the first coats of the mold surface would be a tooling resin of some sort. I use the same laminating resin throughout but the first two coats prior to cloth application is mixed with 5% volume by weight graphite powder. Your first couple layers of cloth should be fairly light weight, I start with 1.4oz then 3oz then alternate between 5.8oz and 12oz. Lastly, it is almost impossible to get a smooth finish by spraying PVA ( at least for me ), I apply PVA straight out of the bottle with a foam brush.